ChatGPT voice mode is a weaker model
Simon Willison reveals a counterintuitive fact: ChatGPT's voice mode runs on an older, weaker GPT-4o-era model, creating a massive gap between user expectations and reality.
Simon Willison · Apr 10, 2026
Simon Willison reveals a counterintuitive fact: ChatGPT's voice mode runs on an older, weaker GPT-4o-era model, creating a massive gap between user expectations and reality.
Relying on LLM as a judge won't solve product issues; the key lies in optimizing evaluation processes through the scientific method for continuous product improvement.